The World Health Organization has issued new evidence-based recommendations to help prevent or delay dementia by addressing modifiable risk factors.
Key facts
- •Alzheimer's disease accounts for 60–70% of all dementia cases.
- •The new guidelines update and expand upon recommendations first issued by the WHO in 2019.
- •Air pollution is identified as a specific environmental factor contributing to cognitive decline.
- •The guidelines advise against routine supplementation of vitamins and minerals without a diagnosed deficiency.
- •Nearly 10 million people are newly diagnosed with dementia every year.
The World Health Organization (WHO) has released updated guidelines aimed at reducing the risk of cognitive decline and dementia. The recommendations provide countries with evidence-based strategies to address modifiable risk factors throughout a person's life. Currently, more than 57 million people live with dementia globally, with nearly 10 million new cases diagnosed each year.
By the numbers
Modifiable Risk Factors
Up to 45% of dementia risk is attributed to factors that can be modified, including tobacco and alcohol use, social isolation, physical inactivity, and air pollution. The guidelines also emphasize the management of noncommunicable diseases such as high blood pressure, diabetes, and high cholesterol. Additionally, the use of hearing aids is suggested as a potential risk-reduction strategy.
Recommended Interventions and Precautions
The WHO recommends engaging in cognitive training, stimulation, and social activities for adults with normal cognition or mild cognitive impairment. Conversely, the guidelines do not recommend the use of vitamin B, vitamin E, omega-3, or multivitamin supplements in the absence of a diagnosed deficiency, citing a lack of evidence regarding potential benefits and the possibility of harmful effects.
Global Economic Impact
Dementia imposes a significant economic burden, costing the global economy an estimated US$ 1.3 trillion annually. Approximately half of these costs are attributed to unpaid care provided by family members and friends. The WHO notes that addressing these risk factors can improve quality of life and help individuals maintain independence for longer.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by WHO News.
